Onyx is a banded variety of the oxide mineral chalcedony. The colors of its bands range from white to almost every color (with the exception of some shades, such as purple or blue). Commonly, specimens of onyx contain bands of black and/or white.
Gold(14K) A coating of gold is deposited on the item using the galvanic method or IP process. It is mixed with other metals, usually silver or copper, to make it less expensive, harder, and longer lasting while preserving the brilliance of pure gold. 14k gold is 14/24 of pure gold, which is approximately 58.3% pure gold.